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build, hack, tweak, share, discover, J 




Written By: Duane Mackey 


small drill bit or crafting punch, scissors 
hammer (1) 


2 small rivets, thin cardboard, paper, 
glue.glue or (1) 

Thin cardboard can be replaced with 
other, similar material 


I design home additions. Knowing the pitch of a roof is a critical step in designing an addition 
or estimating roof areas for shingles, insulation and ventilation requirements. Figuring the 
roof area is a lot easier and safer with this tool. 

© Make Projects 

Page 1 of 3 


• This is a unique and simple tool 
that makes estimating roof areas 
and roof pitch easy and safe. 

• Glue to card stock, drill or punch 
holes and fasten together with 
small rivets or screw post binders 
from the hardware store. 

Step 2 

duano's RoofGuessEstimator 

Roof G uessEsti mate r 

20 19 14 IT 16 1S t4 13 U 11 1Q 9 9 7 6 5 4 32^ 


UngM wdtix Riaof pilch factor = ^^ 



r\j p-i c* 


S ■: -: ■" r ' - re- & 

•■■, .*. "■ 



■ I *^ h-u. C- rrt> h» rt' rt Ni -rt -rt fi_ O 

£ i- £4^^ 171 -ifl i£ *-, *Ci on 9 
jit qSC6&& , 0<}405' ; 

n n n n n i 


20 19 18 17 16 15 14 13 12 11 10 9 S 7 6 5 4 3 2 1 

Ungft x WAX faif pitch factor: 

■', I !! T 


i 1 1 i-"^ 


■» 2 ■ w 


■ A 


Print and glue this page to stiff 
posterboard or thin stiff cardboard, 
laser prinl for durability, protect ink 
jel prints with a dear tape 
overlay, A rolsry trimmer cuts best 


£) £ d& 

t* -T 





r-y. CM .N -."s 

.— . K Q rV) K. -Q -rt f 1 ^ Q rt f»- * 


cJ »-; w n Tt S -S 3 rw (£■ oj ■: 




D O U H B □ 


drill or (*<Kh accurate- holes wed for 
small eyeleis or mets or screw pest binders. 

fasten togeiher with washer/ 

To use: hold tlio HoofGuositislimalor level and slida ine free end 

the roof. The corresponding number in the sight window (on ihe fre 

the roof. 

To deteriTiin& roof area: 

Simply ( Multiply) [he meaxu red Lengl h by 1he Width of Ihe house 

* the roar -overhangs]! = xxkx HOUSE area in sq ft fm 

Multiply this (House) foot print area (xxx) by Ihe corresponding Pitt 

• Download and print out the PDF 

• [ 

© Make Projects 

Page 2 of 3 


• OK, if you really would like to give 
this and want to make it as good 
and durable as possible, go to a 
copy center like Staples or 
OfficeMax and have it printed in 
color on No-Tear paper. It really is 
the best; it costs about $1 .50 and 
is worth every penny. Also try to 
find some thin vinyl (re-purposed) 
rather than card stock for the 
backing material. I have not tried it 
yet but hot laminating with 5 or 10 
mil and cutting it at the copy center 
would work nicely, I think. 

Print out the PDF, Glue to card stock, drill or punch holes, fasten together with small rivets or 
screw post binders from the hardware store 

This document was last generated on 201 2-1 2-02 01 :43:49 PM. 

© Make Projects 

Page 3 of 3